Replaced the dead battery in an old iPod Nano I bought (really wanted a cheap Product Red one) and not even 2 days later the replacement battery expanded. I would call this
Old school iPod Nano battery replacement – Fix It Workshop
Old school iPod Nano battery replacement – Fix It Workshop
iPod nano (1st generation) | Apple Wiki | Fandom
Review: Apple iPod nano (Fifth-Generation) | iLounge
Old school iPod Nano battery replacement – Fix It Workshop
Battery for Apple iPod Nano 1st Generation 1 Gen A1137 4gb 2gb 1gb 616-0224 New - AliExpress
Surprise Update! My iPod Nano 4th Gen No Longer Has An Expanded Battery | 7 , 4 And 1 Month Ago : r/ipod
Apple Officially Ends iPod Nano Replacement Program, but Still Honoring Requests - MacRumors
Opinion: Why iPod nano's three-week battery life is and isn't a fair benchmark for Apple Watch longevity - 9to5Mac